Z.H.P. Unlosing Ranger vs Darkdeath Evilman is an excellent TRPG game in which you will communicate a lot with the main characters in a plot like in RPG games and then you will fight with various enemies on a tactical map as in classic turn-based strategies.

If you like high-quality TRPG games then you will like a game called Z.H.P. Unlosing Ranger vs Darkdeath Evilman (NTSC-U US ULUS-10559, PAL EU NPEH-00099 Eng ISO ROM PSP) - to download this game use the link above.